1,1-Dichloroethylene
Hillcrest Water District
NOTE: Hillcrest Water District purchases water from Leicester Water Supply District which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Leicester Water Supply District.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
NOTE: Hillcrest Water District purchases water from Leicester Water Supply District which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Leicester Water Supply District.
| Date | Result |
|---|---|
| 2019-05-28 | ND |
| 2019-05-28 | ND |
| 2019-05-28 | ND |
| 2019-05-28 | ND |
| 2020-06-24 | ND |
| 2020-06-24 | ND |
| 2020-06-24 | ND |
| 2020-06-24 | ND |
| 2021-06-16 | ND |
| 2021-06-16 | ND |
| 2021-06-16 | ND |
| 2021-06-16 | ND |
| 2022-05-12 | ND |
| 2022-05-12 | ND |
| 2022-05-12 | ND |
| 2022-05-12 | ND |
| 2023-05-10 | ND |
| 2023-05-10 | ND |
| 2023-05-10 | ND |
| 2023-05-10 | ND |